I am thinking about the mobo tray and humming and haaing about it.
Something about plastic makes me fear for the mobo etc..... considering making a metal one?
Anyone with more experience who can instil confidence in it?

Also I talked about a to-do list, so Here goes:
-Adjust feet holes so the feet attach.
-cut and file the rad mounts for airflow
-file the pillars to make the rads less 'snug'
-cut and file the PSU hole.
-sand case
-Paint case
-Polish feet

That is a concern,
But given their length I'm hoping it'll be fine, that and using monsoon fittings over the 'push-in' type fittings

Well your GPUs should be ok since the ports from the left side of your case are on the same axis to the ports of the GPU. However your CPU is on a different axis to the other ports coming from the right side of your case so I have a suspicion they will drop slightly. Although im not 100% familiar with the monsoon fittings. I do know that the EK HD would drop about 5-10degrees speaking from personal experience.

Well your GPUs should be ok since the ports from the left side of your case are on the same axis to the ports of the GPU. However your CPU is on a different axis to the other ports coming from the right side of your case so I have a suspicion they will drop slightly. Although im not 100% familiar with the monsoon fittings. I do know that the EK HD would drop about 5-10degrees speaking from personal experience.

I'll just have to 'suck it and see'
It'd be a shame if it dropped, some thin wire might need to be employed

Monsoon fitting's work by having a collar which is glued to the end of the tubing, and that collar clamped down by the compression fitting, it's very secure (in the product video they support a 25Kg weight from it) and I've talked with monsoon about my build and they never mentioned anything, so fingers crossed

I'll just have to 'suck it and see'
It'd be a shame if it dropped, some thin wire might need to be employed

Monsoon fitting's work by having a collar which is glued to the end of the tubing, and that collar clamped down by the compression fitting, it's very secure (in the product video they support a 25Kg weight from it) and I've talked with monsoon about my build and they never mentioned anything, so fingers crossed

I think you will be fine then. That Collar will most certainly help keep its form much better than the EK HD. In fact if you "wiggle" all tubes inserted into the EK HD fittings you will notice that there is a little play there meaning support isnt that great